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Home >> Dodge and Ram >> 1995 >> Viper >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> ASD Sense Circuit

ASD Sense Circuit

The Automatic Shutdown (ASD) sense circuit informs the PCM when the ASD relay energizes. When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD relay, it sets a diagnostic trouble code.